Unlocking the Potential of Sunyaev-Zeldovich Cluster Surveys with Advanced Cosmological Simulations

通过先进的宇宙学模拟释放 Sunyaev-Zeldovich 星团巡天的潜力

• 批准号: 0407368
• 负责人: Jack Burns
• 金额: --
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0407368&HistoricalAwards=false
• 关键词: Unlocking; Potential; Sunyaev; Zeldovich; Cluster

AST-0407368BurnsThis research will use synthetic observations applied to detailed, high-resolution simulations of cosmological structure formation to focus on three specific problems that may hinder progress with surveys of the Sunyaev-Zeldovich effect (SZE). First, the transient boosting of a cluster's SZE signature due to cluster mergers may significantly complicate comparison of observed clusters to cosmological models. Second, measurement of cluster masses may introduce both systematic errors and bias. Finally, internal flows act as a contaminant to measurements of cluster peculiar velocities through the kinetic SZE, but are themselves an interesting observable. To maximize the impact of this research, all simulation results, in their entirety, will be available for use by the scientific community through the Simulated Cluster Archive. Research projects will be generated to involve undergraduate astrophysics majors, and the investigators will partner with an area high school via a university initiative that targets under-represented groups.

AST-0407368BURNSSITHS这项研究将使用综合观察结果应用于宇宙学结构形成的详细高分辨率模拟，以关注三个特定问题，这些问题可能会阻碍Sunyaev-Zeldovich效应（SZE）的Sunyaev-Zeldovich效应的调查。 首先，由于聚类合并而导致的集群SZE特征的瞬时增强可能会显着使观察到的簇与宇宙学模型的比较变得复杂。 其次，群集质量的测量可能引入系统误差和偏差。 最后，内部流充当通过动力学sze测量群集奇特速度的污染物，但本身就是一个有趣的观察。 为了最大程度地提高这项研究的影响，所有仿真结果全部都将由科学界通过模拟群集存档使用。 研究项目将产生涉及本科生的天体物理学专业，研究人员将通过一项针对代表人数不足的团体的大学倡议与地区高中合作。